Weldrod holder



NOV- 7, 1933. J. TlEDEMANN 1,933,942

WELDROD HOLDER Filed March 12, 1930 y IO 3 /o a 2/ m /z INVENTOR.

Julius B.T1'edemann A TTORNEY.

Patented Nov. 7, 1933 PATENT OFFICE WELDROD HOLDER Julius B. Tiedemann,Milwaukee, Wis., assiguor to A. 0. Smith Corporation, Milwaukee, Wis acorporation of New York Application March 12, 1930. Serial No. 435,149

SCIa-ims.

This invention relates to a weldrod holder. An object of the inventionis to provide a weldrod holder which insures good electrical contact forthe welding electrode. A further object is to provide a weldrod holderwhich is adapted to expedite replacement of used weldrods during thewelding" operation.

The invention is best understood by referring to the accompanyingdrawing in which:

Figure 1 is a side view of a preferred embodiment of the invention,portions being broken away.

Fig. 2 is a front view. Fig. 3 is a view taken on the line 3-3 of Figure 1.

The weldrod holder has two side plates 1 and 2 which are preferably cutfrom sheet metal. Each side plate has a projection 3 to which'a handleor bracket may be attached.

The plates 1 and 2 are spaced apart by blocks 4, 5, 6, '7, and 8. Block5 forms a clamping member and is preferably of metal, such as copper,and serves to conduct the current to the weld-rod 9. Each of the blocksis held in place by rivets 5 10 which pass through the block and throughthe plates 1 and 2 on each side securing the same in assembled relation.Block 6 has a beveled face 11 against which a wedge shaped member 12 isadapted to slide, said member being confined between the plates 1 and 2.Integral with the wedge 12 is an extension 13, the upper end of which isforked and pivotally attached to a small hand lever 14 by means of a pin15. The hand lever is preferably located at the top of the holder and ispivotally attached thereto by a pin 16.

The wedge 12 is ,drawn upwardly and into engagement with the weldrod 9by the lever 14. The lever 14 is urged upward by a compression o spring17 interposed between a shoulder 18 of the guide 19 and a fixed washer20 engaging two pins 21 and 22 which serve to confine the guide 19 atits lower end. The guide 19 is forked at its upper end and is pivotallyattached 5 to the hand lever 14 by a pin 23.

In use the shank of the weldrod 9 is inserted into a space providedbetween the block 5 and the wedge 12. The face of the wedge 12 whichabuts the weldrod 9 is shaped to conform to the rounded surface of theweldrod and to when the weldrod 9 has been consumed as much as practicalin the welding operation the hand lever 14 is depressed, causing thewedge 12 to move downwardly and release the end of the used weldrod. Thestub drops out and a new weldrod may be substituted therefor with verylittle loss of time. The release may be accomplished with one hand.

The present invention is adapted for use either for hand or for machinewelding. The projection 3 may be located at any place which is mostconvenient for the use for which the holder is intended. If the holderis used for hand welding, its position is preferably that shown in theaccompanying drawing. A handle 25 is shaped to fit the socket 26 formedby the projections 3 7 of the side plates 1 and 2, and the spacers 7 and8. A set screw 27 may be used to secure the handle in assembledrelation.

While a specific form has been shown, I claim all embodiments within thescope of the present 7 invention.

I claim:

1. In a weldrod holder, clamping means adapted to engage the weldrod,comprising a wedge, a stationary member, means biasing the wedgelongitudinally of the holder relative to the stationary member, and aguide for forcing the wedge against the weldrod to secure the weldrodbetween the wedge and the stationary member as the wedge is actuated bythe biasing 35 means.

2. In a weldrod holder, clamping means comprising a member adapted toabut a weldrod, a wedge, means biasing the wedge relative to the member,and a guide to move the wedge toward the weldrod to engage the weldrodand grip the same between said abutting member and said wedge as thewedge is actuated by the biasing means.

3. A holder for weldrods comprising, in com- 5 bination, a frame, a jawupon the frame for receiving a weldrod, a movable jaw disposed on theframe, means for wedging the movable jaw to grip a weldrod incooperation with the first Jaw, and biasing means for effecting theactuation of the wedging means.

JULIUS B. TIEDEMANN.

